/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.srkj.org.activiti.rest.editor.model;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import lombok.extern.slf4j.Slf4j;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

/**
 * @author Tijs Rademakers
 */
@RestController
@Slf4j
public class ModelSaveRestResource implements ModelDataJsonConstants {

  @Autowired
  private RepositoryService repositoryService;

  @Autowired
  private ObjectMapper objectMapper;
  @PutMapping(value={"/service/model/{modelId}/save"})
  @ResponseStatus(value = HttpStatus.OK)
  public void saveModel(@PathVariable String modelId, String name, String description, String json_xml, String svg_xml) {
    try {
      Model model = repositoryService.getModel(modelId);
      ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
      modelJson.put(MODEL_NAME,name);
      modelJson.put(MODEL_DESCRIPTION,description);
      model.setMetaInfo(modelJson.toString());
      model.setName(name);

      repositoryService.saveModel(model);
      repositoryService.addModelEditorSource(model.getId(),json_xml.getBytes("utf-8"));
      InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8"));
        TranscoderInput input = new TranscoderInput(svgStream);
        PNGTranscoder transcoder = new PNGTranscoder();

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        TranscoderOutput output = new TranscoderOutput(outputStream);

        transcoder.transcode(input,output);
        byte[] result = outputStream.toByteArray();
        repositoryService.addModelEditorSourceExtra(model.getId(),result);
        outputStream.close();


    }catch (Exception e){
      throw new ActivitiException("Error saving model", e);
    }
  }



}
